We have a camera converted to capture near-infrared. These wave-lengths are just out of the visible spectrum, but not quite into the thermal spectrum. Near-infrared wave-lengths are reflected by the chlorophyll in plants, making living vegetation glow in images. These types of images are of interest to many in the vegetation industry, as it allows them to easily see plant health, stress, infestation, and disease. The image below shows kelp in the near-infrared spectrum and how it glows in the dark ocean.